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List of symbols for corrosion research
Here you will find all the symbols used used by us in this knowledge base. Please note, that other publications might use different symbols for the same parameters.
| [A] | concentration of A |
| ßanodic | Tafel slope for oxidation |
| ßcathodic | Tafel slope for cathodic |
 |
derivative of x with respect to y |
| ε0 | electric field constant |
| εr | relative permittivity |
| Φ | phase shift |
| 𝜙 | CPE parameter: 0 Resistor, 1 Capacitor |
| τ | time constant of a capacitor (τ = RC) |
| a | activity |
| aOx | activity of the oxidized species |
| aRed | activity of the reduced species |
| A | area |
| c | concentration |
| cb | bulk conentration |
| cOx | concentration of the oxidized species |
| cRed | concentration of the reduced species |
| C | capacity |
| CC | coating capacity |
| Cdl | double layer capacity |
| CE | counter electrode |
| d | distance |
| E | potential |
| E0 | standard potential |
| E0’ | formal potential |
| EC | charging potential applied to a capacitor |
| Ecorr | corrosion potential |
| Epp | primary passivation potential |
| Estep | step potential during DPV and SWV |
| ET | transmission potential for passivation film |
| fOx | activity coefficient of the oxidized species |
| fRed | activity coefficient of the reduced species |
| F | faraday constant |
| I | electric current |
| I0 | current at t = 0 |
| Icap | capacitive charging current |
| Icorr | corrosion current |
| Icrit | critical passivation current |
| Ipas | passive current / current for passivated material |
| k | reaction rate |
| KL | solubility product |
| n | amount of substance / order of reaction |
| Ox | an oxidized species |
| Q | charge |
| r | reaction rate |
| R | resistance or universal gas constant |
| Rpor | pore resistance |
| Rsol | Solution resistance |
| RU | uncompensated resitance |
| RE | reference electrode |
| Red | a reduced species |
| t | time |
| tinterval | time between two point of measurement |
| T | temperature |
| U | voltage |
| v | scan rate |
| vs | versus |
| WE | working electrode |
| z | electrons transferred per molecule |
| Z | impedance |
| ZCPE | impedance of the CPE |
| ZW | Warburg impedance |
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